tunnel rivets rusting - HCS Snowmobile Forums

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Old 10-31-2019, 05:50 PM   #1 (permalink)
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Default tunnel rivets rusting

So I love my sidewinder but I cannot believe that Cat or Yamaha or whomever put steel right up against the aluminum tunnel. I have friends with winders and all have the same problem. If you look at the rivets that attach the rear brake assembly to the tunnel, there are 2 more inline. One on either side. these are rusting. After one season. I cleaned my entire sled with soap and water before putting it away so its not salt. Anyone see this?

Any suggestions on a cure?

I was at the snowmobile show in Toronto last weekend and I even saw a few "demo" sleds with the same issue.
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Old 10-31-2019, 07:02 PM   #2 (permalink)
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jap parts
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Old 10-31-2019, 07:16 PM   #3 (permalink)
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Default Ouch

Wow. Way to take it there. lol!! I think you might just be jealous because the only part of a Sidewinder you have ever seen is the tail light.
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Old 10-31-2019, 07:18 PM   #4 (permalink)
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nope seen one on its side in a ditch pretty kwel he was going to fast
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Old 10-31-2019, 07:19 PM   #5 (permalink)
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ha-ha! Don't try and outrun the headlights.
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Old 10-31-2019, 07:22 PM   #6 (permalink)
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all fun dude
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Old 11-02-2019, 03:31 PM   #7 (permalink)
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In the summer when I go over the sleds I apply a dab of rust paint on the affected rivets . On aluminum tunnels I use aluminium paint after scrubbing off the rust. It's not perfect but I call it the 20/20 fix...looks good from 20 feet away while going by at 20 mph.

I often use the stronger steel rivets instead of the softer aluminum ones in critical areas on my vintage aluminum chassis...I can't be too harsh on Cat if that's their reasoning. Do you think that's why they might use them?

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Old 11-04-2019, 10:03 AM   #8 (permalink)
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No idea really. I asked the Yamaha rep at the snowmobile show and he said that he didn't know why they do but was aware of the issue. Also a local dealer was telling me that he is aware of the issue but Yamaha says its cosmetic and they don't do anything about it.
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